LangGraph

Stateful graph-based agent orchestration (LangChain).

Key facts

• Use case: Agent frameworks
• TestedTools score: Testing in progress
• Pricing: Open-source library free (MIT); managed hosting via LangSmith: Developer $0, Plus $39/seat/mo (includes 1 free small serverless deployment), then usage-based partial (source, checked 2026-10-15)
• Affiliate: unknown

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Alternatives

• CrewAI
• OpenAI Agents SDK
• Microsoft AutoGen
• Pydantic AI
• Mastra

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